ClassID:

173321

G01V3/104 - CPC Classification

Classification description:

Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils

Sub-classes:
Recent Application in this class:
#1
20260079280
2026-03-19

ELECTROMAGNETIC MARKER DEVICES FOR BURIED OR HIDDEN USE

#2
20260063818
2026-03-05

MAGNETIC FIELD IMAGE ACQUISITION APPARATUS AND METHOD BASED ON RESONANT STRUCTURE

#3
20260050101
2026-02-19

Metal Detector Coil

#4
20250383468
2025-12-18

Methods and Systems for Managing the Reconfiguration of Metal Detectors

#5
20250204804
2025-06-26

STIMULATED-ECHO IMAGING FOR EPRI

#6
20250110252
2025-04-03

INDUCTIVE SCANNER AND METHOD FOR INDUCTIVE SCANNING

#7
20250000603
2025-01-02

Metal Detection System For Use With Medical Waste Container

#8
20240393491
2024-11-28

METHOD AND APPARATUS FOR AUTONOMOUS GRAVITY AND/OR MAGNETIC FIELD MEASUREMENT

#9
20240329275
2024-10-03

CONSTANT CURRENT METAL DETECTOR WITH DRIVEN TRANSMIT COIL

#10
20240329274
2024-10-03

NON-CONTACTING ANGULAR ENCODER FOR DETERMINATION OF RELATIVE ORIENTATION OF TWO REFERENCE FRAMES ATTACHED COMPLIANTLY

#11
20240295670
2024-09-05

APPARENT RESISTIVITY MEASURING SYSTEM AND METHOD USING SEMI-AIRBORNE ELECTROMAGNETIC METHOD

#12
20240159933
2024-05-16

DEVICE AND PROCESSING METHOD FOR OFFSETTING ATTITUDE ERROR OF SEMI-AIRBORNE ELECTROMAGNETIC SYSTEM

#13
20240153368
2024-05-09

SYSTEM AND METHOD OF IMPROVING SENSOR RESPONSE FOR A MAGNETIC GATEWAY USING A MAGNETIC BUCKING APPARATUS

#14
20240077635
2024-03-07

METAL DETECTION APPARATUS

#15
20240027644
2024-01-25

Non-Invasive Method For Behind-Casing Cable Localization

#16
20230393297
2023-12-07

Method for Securing Power in Remote Locations and Apparatus Therefor

#17
20230375738
2023-11-23

CONSTANT CURRENT METAL DETECTOR WITH DRIVEN TRANSMIT COIL

#18
20230375737
2023-11-23

SYSTEMS AND METHODS FOR LOCATING, MAPPING, AND IDENTIFYING SUBTERRANEAN PIPELINES

#19
20230240553
2023-08-03

T-sensitive inversion-recovery imaging for EPROI

#20
20230161067
2023-05-25

Audio rendering of an electromagnetic metal detection signal

#21
20230103921
2023-04-06

Charging system, foreign object detection method and component, charging control method and device

#22
20230099095
2023-03-30

Foreign object detection circuit using mutual impedance sensing

#23
20230094691
2023-03-30

Foreign object detection circuit

#24
20220395347
2022-12-15

Metal detection system for use with medical waste container

#25
20220390643
2022-12-08

CONSTANT CURRENT METAL DETECTOR WITH DRIVEN TRANSMIT COIL

#26
20220236442
2022-07-28

Open metal detector

#27
20220196873
2022-06-23

Metal detector, handheld power tool comprising this metal detector, metal detection method, and metal detection program

#28
20220146345
2022-05-12

Reference signal compensation for magnetostrictive sensor

#29
20220107440
2022-04-07

Luggage detector

#30
20220107439
2022-04-07

Metal-detector means for locating the presence of metal objects

#31
20210290332
2021-09-23

Metal detection system for use with medical waste container

#32
20210273335
2021-09-02

Antenna of a metal detector

#33
20210263180
2021-08-26

Detector for detecting electrically conductive material

#34
20210231825
2021-07-29

Foreign object detection circuit using mutual impedance sensing

#35
20210231824
2021-07-29

Metal Detector

#36
20210208300
2021-07-08

CONSTANT CURRENT METAL DETECTOR WITH DRIVEN TRANSMIT COIL

#37
20210199835
2021-07-01

Metal detector

#38
20210180936
2021-06-17

Inductive analysis of metal objects

#39
20210149071
2021-05-20

Programmable universal probe

#40
20210116597
2021-04-22

Foldable metal detector

#41
20210116595
2021-04-22

Foldable portable metal detector having a quickly replaceable detection coil disk

#42
20210063599
2021-03-04

Detection coil, detection apparatus, and detection system

#43
20210048550
2021-02-18

INDUCTIVE POSITION SENSOR WITH SWITCH FUNCTION

#44
20210046571
2021-02-18

INDUCTIVE POSITION SENSOR WITH SWITCH FUNCTION

#45
20210040782
2021-02-11

Device for detecting, by induction, intention of locking or unlocking an opening element of a motor vehicle with primary and secondary coils

#46
20210018644
2021-01-21

METHOD FOR SECURING POWER IN REMOTE LOCATIONS AND APPARATUS THEREFOR

#47
20210018386
2021-01-21

Reference signal compensation for magnetostrictive sensor

#48
20200350787
2020-11-05

Sensor arrangement for a foreign object detection device

#49
20200331719
2020-10-22

Detector with triangle-shaped inductor coils

#50
20200328626
2020-10-15

Foreign object detection in wireless power transfer by asymmetry detection

#51
20200319362
2020-10-08

Non-Invasive Method For Behind-Casing Cable Localization

#52
20200301037
2020-09-24

CONSTANT CURRENT METAL DETECTOR WITH DRIVEN TRANSMIT COIL

#53
20200260984
2020-08-20

High-isolation transmit/receive surface coils for EPRI

#54
20200225379
2020-07-16

Method for locating an object moving in a magnetic field generated by a set of at least three magnetic generators

#55
20200204005
2020-06-25

Wireless power transmission apparatus

#56
20200200937
2020-06-25

Foreign object detection circuit using mutual impedance sensing

#57
20200158910
2020-05-21

Electromagnetic marker devices for buried or hidden use

#58
20200110190
2020-04-09

Differential target antenna coupling (DTAC) data corrections

#59
20200073007
2020-03-05

Metal detection apparatus

#60
20190331823
2019-10-31

Differential target antenna coupling (DTAC) data corrections

#61
20190316943
2019-10-17

Method and apparatus for monitoring the flow of mixtures of fluids in a pipe

#62
20190310120
2019-10-10

Method and apparatus for monitoring the flow of mixtures of fluids in a pipe

#63
20190285586
2019-09-19

Method and apparatus for evaluating damage to magnetic linear body

#64
20190285585
2019-09-19

Method and apparatus for evaluating damage to magnetic linear body

#65
20190265379
2019-08-29

Calibration method for electromagnetic induction measurement systems, and apparatus

#66
20190225099
2019-07-25

Foreign object detection circuit using current measurement

#67
20190113325
2019-04-18

Hemisphere ambiguity correction in electromagnetic position tracking systems

#68
20190107585
2019-04-11

Magnetic sensor sensitivity matching calibration

#69
20190086482
2019-03-21

Correcting field distortion in electromagnetic position tracking systems

#70
20190041542
2019-02-07

Method and apparatus of near-bit resistivity for looking-ahead

#71
20190041537
2019-02-07

Metal detection apparatus and metal detection method

#72
20190021630
2019-01-24

Interconnect ring for microminiature electrical coil

#73
20190011591
2019-01-10

Metal detection sensor and metal detection method using same

#74
20180368933
2018-12-27

Metal detection system for use with medical waste container

#75
20180329101
2018-11-15

Foreign object detection in wireless energy transfer systems

#76
20180329100
2018-11-15

Shieldings for metal detector heads and manufacturing methods thereof

#77
20180323659
2018-11-08

Foreign object detection in wireless power transfer by asymmetry detection

#78
20180323658
2018-11-08

Device for detecting a parasitic metallic object in the emission zone of a device for recharging a user apparatus for an automotive vehicle and associated detection method

#79
20180252835
2018-09-06

Metal detection devices

#80
20180217287
2018-08-02

LOCATING-DEVICE PROBE ASSEMBLY

#81
20180188404
2018-07-05

DEVICE FOR LOCATING OBJECT, AND METHOD FOR LOCATING OBJECT BY MEANS OF DEVICE

#82
20180172869
2018-06-21

Signal processing technique for a metal detector

#83
20180172867
2018-06-21

Method and apparatus for simultaneous inductive excitation and locating of utilities

#84
20180172866
2018-06-21

Underground utility line detection

#85
20180156936
2018-06-07

Pulsed eddy current casing inspection tool

#86
20180154367
2018-06-07

DETECTING PASSING OF UNINTENDED OBJECTS THROUGH THROAT OF UNDER-SINK DISPOSAL

#87
20180143342
2018-05-24

WEARABLE METAL DETECTOR

#88
20180136152
2018-05-17

Method for testing a metal detection apparatus and metal detection apparatus

#89
20180106925
2018-04-19

Constant Current Metal Detector with Driven Transmit Coil

#90
20180106923
2018-04-19

Conductor tracing instruments

#91
20180100943
2018-04-12

Differential target antenna coupling (“DTAC”) data corrections

#92
20180076671
2018-03-15

Dynamic mutual sensing foreign object detection loops

#93
20170363764
2017-12-21

Systems and methods for uniquely identifying buried utilities in a multi-utility environment

#94
20170363763
2017-12-21

Foreign-object detecting device, wireless electric-power transmitting device, and wireless electric-power transmission system

#95
20170350863
2017-12-07

Detector systems

#96
20170276820
2017-09-28

Foreign matter detection device

#97
20170261630
2017-09-14

Utility locators with retractable support structures and applications thereof

#98
20170259272
2017-09-14

Detecting passing of unintended objects through throat of under-sink disposal

#99
20170235010
2017-08-17

OMNI-INDUCER TRANSMITTING DEVICES AND METHODS

#100
20170192120
2017-07-06

Gradient antenna coils and arrays for use in locating systems

#101
20170176623
2017-06-22

Apparatus, system and method for remote localisation of a marker using magnetic fields

#102
20170168189
2017-06-15

Walk Through Metal Detection System

#103
20170168188
2017-06-15

Multi-frequency micro induction and electrode arrays combination for use with a downhole tool

#104
20170160420
2017-06-08

Utility locating systems, devices, and methods using radio broadcast signals

#105
20170148567
2017-05-25

Methods and apparatus for collocating electromagnetic coils and electronic circuits

#106
20170131424
2017-05-11

Sondes and methods for use with buried line locator systems

#107
20170072403
2017-03-16

Detecting passing of unintended objects through throat of under-sink disposal

#108
20170023692
2017-01-26

System and method for locating a marker using a locator with multiple transmitters

#109
20170022690
2017-01-26

Wear member retention system for an implement

#110
20170012674
2017-01-12

Checking a presence of an electrically conductive body

#111
20160324438
2016-11-10

Method and apparatus for EPROI using T1e spin-lattice relaxation response

#112
20160282500
2016-09-29

Sensor and method for foreign object detection in induction electric charger

#113
20160249825
2016-09-01

APPARATUS AND METHOD FOR CONCENTRATING MAGNETIC FIELD AT HIGH RESOLUTION AND MAGNETIC FIELD RECEIVING DEVICE FOR SAME

#114
20160245623
2016-08-25

System for the detection and classification of buried unexploded ordnance

#115
20160238733
2016-08-18

Apparatus and method for simultaneously obtaining quantitative measurements of formation resistivity and permittivity in both water and oil based mud

#116
20160223701
2016-08-04

Antenna for underground line location

#117
20160209540
2016-07-21

Gain compensated tensor propagation measurements using collocated antennas

#118
20160187522
2016-06-30

Buried object locators with dodecahedral antenna nodes

#119
20160139288
2016-05-19

Device and method for monitoring access to a storage area of a plurality of storage areas for goods

#120
20160109608
2016-04-21

Buried service detection

#121
20160097874
2016-04-07

Buried service detection

#122
20160084983
2016-03-24

Homogeneous inversion for multi-component induction tools

#123
20160076926
2016-03-17

Method and apparatus for monitoring the flow of mixtures of fluid in a pipe

#124
20160047934
2016-02-18

Extended 1D inversion of electromagnetic measurements for formation evaluation

#125
20160041290
2016-02-11

Object locater and method for locating a metallic and/or magnetizable object

#126
20160037584
2016-02-04

Method of detecting cookware on an induction hob, induction hob and cooking appliance

#127
20160033667
2016-02-04

Metal detector apparatus, system, and method

#128
20160006260
2016-01-07

Power transmission device and power reception device

#129
20160003961
2016-01-07

Utility locator apparatus, systems, and methods

#130
20150362614
2015-12-17

Metal object detection device

#131
20150355361
2015-12-10

Sensor having rotationally offset coil pairs and differently formed receiving coils for locating metal or magnetic objects

#132
20150331137
2015-11-19

Multi-axial antenna and method for use in downhole tools

#133
20150323694
2015-11-12

Foreign object detection in wireless energy transfer systems

#134
20150311725
2015-10-29

Foreign-object detecting device, wireless electric-power transmitting device, and wireless electric-power transmission system

#135
20150309204
2015-10-29

MAGNETIC SENSOR DEVICE

#136
20150301215
2015-10-22

Apparatus and methods to find a position in an underground formation

#137
20150241589
2015-08-27

Stationary star-shaped antenna method for manipulating focused beamformed, shaped fields and beamsteered electromagnetic signal from subtel sedimentary stratigraphic formations deep in the earth

#138
20150204995
2015-07-23

Inductive clamp devices, systems, and methods

#139
20150185351
2015-07-02

Method for determining the position of a mobile unit and installation for executing a method

#140
20150177412
2015-06-25

Calibration method for multi-component induction tools

#141
20150115965
2015-04-30

Induction logging sensor

#142
20150061882
2015-03-05

Light Attachment for Metal Detectors

#143
20150048833
2015-02-19

Dual coil for electromagnetic sounding of layered earth

#144
20150042343
2015-02-12

OBJECT FINDER

#145
20150002157
2015-01-01

TRANSIENT ELECTROMAGNETIC GEOPHYSICS SYSTEM WITH COOPERATIVE SOURCE(S)

#146
20140375310
2014-12-25

Apparatus and a method for metal detection involving a mobile terminal with a display

#147
20140340088
2014-11-20

Metal sensor

#148
20140312904
2014-10-23

Method of locating the position of linear objects

#149
20140285198
2014-09-25

Method and high-isolation transmit/receive surface coils for EPRI

#150
20140266213
2014-09-18

Omni-inducer transmitting devices and methods

#151
20140218036
2014-08-07

Metal object or feature detection apparatus and method

#152
20140185755
2014-07-03

X-ray based system and methods for inspecting a person's shoes for aviation security threats

#153
20140167744
2014-06-19

Detector systems

#154
20140139223
2014-05-22

Gradient antenna coils and arrays for use in locating systems

#155
20140121969
2014-05-01

Device for detecting objects such as mines

#156
20140097831
2014-04-10

Shieldings for metal detector heads and manufacturing methods thereof

#157
20130320983
2013-12-05

Method and apparatus for target-guided localizing of a cable fault

#158
20130249561
2013-09-26

Multi-axial antenna and method for use in downhole tools

#159
20130200901
2013-08-08

Phase synchronized buried object locator apparatus, systems, and methods

#160
20130193959
2013-08-01

Detection of a metal or magnetic object

#161
20130187654
2013-07-25

Metal detector for use with conductive media

#162
20130163650
2013-06-27

Method and apparatus for a metal detection system

#163
20130147487
2013-06-13

Method for separating target signals from unwanted signals in a metal detector

#164
20130134968
2013-05-30

Detection of a metal or magnetic object

#165
20130127470
2013-05-23

Buried object locator apparatus with safety lighting array

#166
20130113489
2013-05-09

Stationary star-shaped antenna method for manipulating focused beamformed, shaped fields and beamsteered electromagnetic signal from subtel sedimentary stratigraphic formations deep in the earth

#167
20130069620
2013-03-21

Method for operating a metal detection apparatus and apparatus

#168
20130049745
2013-02-28

Metal detection apparatus

#169
20130006552
2013-01-03

Walk through metal detection system

#170
20120212227
2012-08-23

METAL DETECTOR TARGET DISCRIMINATION IN MINERALIZED SOILS

#171
20120179394
2012-07-12

Metal detector

#172
20120153943
2012-06-21

METHOD AND APPARATUS FOR MEASURING AN OBJECT OF INTEREST

#173
20120146647
2012-06-14

Metal detector with at least one transmit/receive switch

#174
20120092004
2012-04-19

Detection method and detector of a disruption, positioning method and system using said method

#175
20120049850
2012-03-01

Metal detector

#176
20120029855
2012-02-02

Detection apparatus with a matching network for nulling and associated methods

#177
20120025815
2012-02-02

Real-time rectangular-wave transmitting metal detector platform with user selectable transmission and reception properties

#178
20110316541
2011-12-29

Hybrid induction balance/pulse induction metal detector

#179
20110221444
2011-09-15

Determining Earth Properties

#180
20110209519
2011-09-01

Systems and methods of reducing a component of a signal caused by vibration

#181
20110172512
2011-07-14

METHOD AND SYSTEM FOR MAGNETIC INDUCTION TOMOGRAPHY

#182
20110133731
2011-06-09

METHOD AND DEVICE FOR MAGNETIC INDUCTION TOMOGRAPHY

#183
20110129063
2011-06-02

X-ray-based system and methods for inspecting a person's shoes for aviation security threats

#184
20110109307
2011-05-12

Digitally Operating Device for Detecting Metallically Conductive Parts

#185
20110101976
2011-05-05

Device for detecting metallic-conducting parts in a conveyed flow

#186
20110095748
2011-04-28

Differential target antenna coupling (DTAC)

#187
20110084692
2011-04-14

Magnetic-disturber detection method and detector, object-localizing method and system, recording medium for these methods

#188
20110068795
2011-03-24

Continuous wave metal detector

#189
20110004432
2011-01-06

Method and device for calibrating a magnetic induction tomography system

#190
20100315080
2010-12-16

METAL DETECTOR

#191
20100312523
2010-12-09

Systems and methods of reducing a component of a signal caused by vibration

#192
20100271011
2010-10-28

Moving vehicle system and method of detecting position of moving vehicle

#193
20100207624
2010-08-19

Detector systems

#194
20100148781
2010-06-17

Rectangular-wave transmitting metal detector

#195
20100141247
2010-06-10

CONSTANT CURRENT METAL DETECTOR WITH DRIVEN TRANSMIT COIL

#196
20100127705
2010-05-27

METHOD AND APPARATUS FOR MAGNETIC INDUCTION TOMOGRAPHY

#197
20100026485
2010-02-04

Metal detector with improved magnetic soil response cancellation

#198
20090318098
2009-12-24

Multi-frequency transmitter for a metal detector

#199
20090315707
2009-12-24

Real-time rectangular-wave transmitting metal detector platform with user selectable transmission and reception properties

#200
20090302847
2009-12-10

Multi-axial antenna and method for use in downhole tools

#201
20090251138
2009-10-08

Metal detector

#202
20090242634
2009-10-01

Device for identifying metallic foreign components

#203
20090219027
2009-09-03

Multi-sensor system for the detection and characterization of unexploded ordnance

#204
20090167299
2009-07-02

Metal detection device

#205
20090163150
2009-06-25

Searching apparatus and method for operating a searching apparatus

#206
20090128156
2009-05-21

Enhanced precise location

#207
20090021252
2009-01-22

Metal detector

#208
20090009173
2009-01-08

Portable wireless metal detector

#209
20080315874
2008-12-25

Passenger inspection system and methods for using the same

#210
20080309344
2008-12-18

Systems and methods useful for detecting presence and / or location of various materials

#211
20080303517
2008-12-11

Sensor for locating metallic objects and method for evaluating measurement signal of such a sensor

#212
20080284441
2008-11-20

Underwater electric field electromagnetic prospecting system

#213
20080272761
2008-11-06

Device and method of detecting ferrite and non-ferrite objects

#214
20080258717
2008-10-23

Magnetic induction tomography system and method

#215
20080224704
2008-09-18

Metal detector with reliable identification of ferrous and non-ferrous metals in soils with varying mineral content

#216
20080094065
2008-04-24

Metal detector

#217
20080074114
2008-03-27

Multi-frequency metal detector having constant reactive transmit voltage applied to a transmit coil

#218
20080074109
2008-03-27

Magnetic detecting device and material identifying device

#219
20080048661
2008-02-28

Rectangular-wave transmitting metal detector

#220
20080007245
2008-01-10

Method for the detection of objects enclosed in a medium, and measuring apparatus for carrying out said method

#221
20070296415
2007-12-27

Method and apparatus for metal detection employing digital signal processing

#222
20070290843
2007-12-20

Metal detector gate comprising refined indicator means

#223
20070255132
2007-11-01

Reduced field distortion in medical tools

#224
20070145830
2007-06-28

System and method for selective transfer of radio frequency power

#225
20070030141
2007-02-08

Symmetric multiple sensing apparatus

#226
20070030105
2007-02-08

Metal detector presenting high performance

#227
20070018816
2007-01-25

Antenna for detecting magnetic field, and gate for detecting detection tag employing the antenna

#228
20070013370
2007-01-18

Magnetic material detecting apparatus

#229
20060267590
2006-11-30

System and method for locating underground utilities carrying passive signals

#230
20060255798
2006-11-16

Passively shielded inductive sensor system for personnel screening

#231
20060238199
2006-10-26

Systems and methods useful for detecting presence and / or location of various materials

#232
20060174600
2006-08-10

Metal detection device

#233
20060076945
2006-04-13

Magnetic material detecting device

#234
20060022670
2006-02-02

Magnetic resonance screening portal with combination sensing

#235
20060006872
2006-01-12

Variable damping induction coil for metal detection

#236
20050270154
2005-12-08

Moving belt sensor

#237
20050264274
2005-12-01

Electrical conductor locating device

#238
20050253711
2005-11-17

Multi-mode electromagnetic target discriminator sensor system and method of operation thereof

#239
20050206373
2005-09-22

Metallic contaminant detecting method and apparatus therefor

#240
20050195083
2005-09-08

Detector system for detecting the direction in which an item passes through a determined boundary zone

#241
20050104594
2005-05-19

Step current inductive antenna for pulse inductive metal detector

#242
20050083049
2005-04-21

Conveyor with a metal detecting device

#243
20050062469
2005-03-24

System and method for hemisphere disambiguation in electromagnetic tracking systems

#244
18418177
2025-12-09

Systems and methods for utility locating in a multi-utility environment

#245
18233285
2024-10-29

Buried object locator apparatus including twelve nodes

#246
18207391
2025-01-28

Electromagnetic marker devices for buried or hidden use

#247
17958715
2024-02-06

Systems and methods for utility locating in a multi-utility environment

#248
17694656
2023-06-27

Electromagnetic marker devices for buried or hidden use

#249
17694640
2024-01-02

Utility locator apparatus and methods

#250
17499810
2023-10-10

Buried object locator with dodecahedral antenna configuration apparatus and methods

#251
17099419
2024-10-01

Phase-synchronized buried object transmitter and locator methods and apparatus

#252
16786935
2022-10-18

Systems and methods for utility locating in a multi-utility environment

#253
16222994
2022-04-12

Utility locators with retractable support structures and applications thereof

#254
16125768
2021-10-26

Buried object locator apparatus and methods

#255
15925643
2020-11-24

Phase-synchronized buried object transmitter and locator methods and apparatus

#256
15485125
2018-10-02

Inductive clamp devices, systems, and methods

#257
15357068
2019-07-16

System and method for induction-based metal detection and high resolution sorting

#258
14077022
2018-07-17

Wearable magnetic field utility locator system with sound field generation

#259
14060200
2016-03-15

Truncated half-sine methods for metal detectors